As The Little Giant Book of Dinosaurs reminds us in its opening words, "There was a time when nobody knew about dinosaurs." Aided by Terry Riley's numerous black-and-white illustrations, Thomas R. Holtz carefully and concisely explains how the dinosaurs were discovered, what we know about them, where they came from, and where they went. The book includes a useful glossary as well as lists of dinosaurs by epoch and by location. The author, who teaches at the University of Maryland, College Park, is a member of NCSE.